From e71084af58cf15e6043338500eeaf6281d0a62af Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Sat, 22 Jan 2011 15:05:03 +0100 Subject: firewire: core: fix card->reset_jiffies overflow On a 32-bit machine with, e.g., HZ=1000, jiffies will overflow after about 50 days, so if there are between 25 and 50 days between bus resets, the card->reset_jiffies comparisons can get wrong results. To fix this, ensure that this timestamp always uses 64 bits. Signed-off-by: Clemens Ladisch Signed-off-by: "Stefan Richter" --- drivers/firewire/core-device.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/firewire/core-device.c') diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index 6113b896e790..57461923bacf 100644 --- a/drivers/firewire/core-device.c +++ b/drivers/firewire/core-device.c @@ -747,7 +747,8 @@ static void fw_device_shutdown(struct work_struct *work) container_of(work, struct fw_device, work.work); int minor = MINOR(device->device.devt); - if (time_is_after_jiffies(device->card->reset_jiffies + SHUTDOWN_DELAY) + if (time_before64(get_jiffies_64(), + device->card->reset_jiffies + SHUTDOWN_DELAY) && !list_empty(&device->card->link)) { schedule_delayed_work(&device->work, SHUTDOWN_DELAY); return; -- cgit v1.2.3